Triphenylmethane dye.



To aZlwhom it may concern:

triphenylntethane e to violet shades.

with oxycarboxylic acids or ELBERFELD,

' RIPHENYLMETHANE DYE.

Specification of Letters Patent. filed.- November 10, 1911.

icensee.

No Drawing. Application Serial No. 659,660

Be it known that I, MAX VVEILER, doctor of philosophy, chemist, citizen of the Ger man Empire, residing at Elberfeld, Germany, have invented new and useful Improvenients in Triphenylmethane Dye, of which the following is a specification.

I have discovered new dyestufi's of the series which can be chromed after dyeing furnishing generally blue to violet shades fast to alkali and fulling. The process for their production consists in condensing meta-oxybenzaldehydes substituted in the nucleus and in which the hydrogen of the oxy group is substituted,

or mixtures there-' The product of and oxidizing the leuco compounds thus obtained. They are after being dried and pulverized dark powders soluble in dilute caustic soda lye with a bluish coloration and dyeing wool after. chroming generally blue I The new In order to illustrate the new process more fully the following example is given, the parts being byweight:23.l parts of para-chloroeortho nitrophenyl-3-oxy-26-dichlorobenzaldehyde:

some of the Dyestuff obtained hornof the reaction and the dyestufl is filtered The structural formula of the graphically represented as follows:

stirred at from 20-45" C. until t i -m l dyes form valuable lakes. In the following table the properties of new dyes areg1ven:

Solubility Solubility WMMYQ' in water. inNeOH.

CHO Ortho-nitrophenyl-S-oxy-Zddiscarcely, Bluem. chlorobenzaldeh. de+orthored. 7 C1 '01 cresotinie e01 d. C1 /i O Orthwpeira-dinitrophenyl-3-oxyscarcely, Blue....

- 2.6-d1chlorobenzeldehyde l-orred.

\ i tho-cresotinic acid.

' I. .4 and 21 parts of ortho-cresotmlc acid are E h i fi l al icv oro enzs. e y e+ -or- -insou e. stirred together with 320 parts of .a strong thomesofimc acid (Ohm-med sulfurlc acld unt1l the aldehyde has d1sapgroin Lfl-gichlerg-io-dritffipea-red. he mixture is poured on we and gi ggfg gfi 'ggg; the leucocompound which is thus separated i 5 1s filtered It can also be fl y 0X?" Pera-chloro-orthomitro-pheny1- Easily. Violet... dized 111 the mixture by'the addition of I11- @t 'ormemmimema. trosyl sulfuric acid while the mixture is Patented not. re, 1912.

he quantity of the dye produced is not further increased and the evolution of nitrogen oxids ceases. is poured on ice off.

dye is mg after.

chromed.

ish-blue Blue.

Reddiehblue.

Solubility solubility 'xf i 'gg in water. in NaOI L g i s Para-ellloro-ortho-nitrophenyl- E a s i 11. 1 Rcd-vio- Violet. ii-oxy-G- sulfol enzaldeliyde+ rcd'orangea let. 1 salicylic acid.

Dyestuil obtained irom- 3-1x1ethoxy-QAfitrichlorobcnzali scarcely,

l Blue. dchyde+ortl1o-cresotinic ncidi raspberry.

Ortho-nitro-para-sulfophcnyl'3- Easily, 1 oxy-ZG-rliehlorobcnzaldchyde Jed-orange. l-ortho-cresotinic acid. i

.. Blue.

.ln1ethoxy-2.G- dibromol euzal- .arcely.

dehyde+ortlio-crcsotin1c acid. bluish red.

. B l u egreen.

3-carhoxylnethoxy-QA-(S-trichlo- Difflcultly.

robenzaldehyde+ortho-cresoi raspberrytinic acidwbtainedfronicliloi red. ro-acctic ucid+3-oxy-2.4.6-trii chlorobcnzaldehyd :l

Blue-violet.

Blue.

Carbonyl-bis-3-oxy-2-4-6-trichlo- Difilcultly,

robenzaldch vdwtortho-cresoraspberrylinie acid. I red.

Blue-vi- Blue.

olct.

I claim 1. The herein described triphenylmethane dyestuffs, being oxidized leuco-condensation products of oxycarboxylic acids with metaoxybenzaldehydes substituted in the nucleus and in the oxy-group, having the following general formula:

in which R, and R are oXy-carboxylic in which 1, and R are oXy-carboxylic acid nuclei, and R is a chlorin substituted metacity-benzene nucleus substituted in the oxy group, which are after being dried and pul- Yerized dark powders soluble in dilute caus tic soda lyc with a blue to violet coloration and dyeing wool after chroming generally blue to violet shades, substantially as described.

3. The herein described triphenylmethane dyestuffs, being oxidized condensation rodnets of oxycarboxylic acids with poly-c lorsubstituted meta-oxybenzaldehydes, substituted in the oxy group, having the following general formula,

R C%Rg in which R, and R, are oXy-carboxylic acid nuclei, and R 'is a polychlor substituted meta-oxy-benzene nucleus substituted in the oxy group, which are after being dried and pulverized dark powders, soluble in dilute causticsoda lye with a blue to violet coloration; and dyeing wool after chroming generally blue to violet shades, substantially as described.

The herein described triphcnylmctlmnc dyestuffs. being oxidized condensation products of oxycarboxylic acids with dichlorsubstituted meta-oxybenzaldehydes, substituted in the oXy group, having the following general formula:

in which R, and R, are oxy-carboxylic acid nuclei, and B is a dichlor-substituted meta-- oxy benzene nucleus substituted in the oxy group, which are after being dried and pulverizcd dark powders soluble in dilute caustic soda lye with a blue to violet coloration and dyeing Wool after chroming generally blue to violet shades, substantially as described.

5. The hereindescribed triphenylmethane dyestuffs, being oxidized leuco-condensat-ion products of oxy-carboxylic acids with 2.6- dichlor substituted meta-oxy benzaldehydes substituted in the oXy-group, having the following formula:

, ox in which R, and R are oxy-carboxylic acid nuclei and X is a substituent, which are after being dried and pulverized dark powders soluble in dilute caustic soda lyewith a blue to violet coloration, and dyeing Wool after chroming generally blue to violet shades. substantially as described.

6. The hereindescribed triphenylmethane dyestufli' having the following graphically represented formula I which, after being dried and pulverized, is my hand in the presence of two subscribing a dark powder, soluble in dilute caustic soda Witnesses.

' lye with a bluish coloration, dyeing Wool MAX WEILER. [L.s.]

chroming a bluish shade, substantially as Witnesses: I

5 described. -ALBERT NUFER,

In testlmony whereof I have hereunto set HELEN N UFER.

Gopie: of this, paient may be obtained for five cents each, by Washington, D. 0.

addressing the Commissioner of ,Patents, 

